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#16
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Another thought, which is rather obvious, - could there be any obscure mechanical resistance preventing the throttles from always closing cleanly.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#17
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Neither O2 sensors nor jumped t-belts will cause rough running - poor running yes, rough running no. Ditto for TPS. What is the EXACT description of DTC 32 & 37? Does it merely read: L/R O2 sensor? Or could it be a heater fault? Or stuck high? Or low? Or O2 performance? Or O2 ckt?
Surging idle and rough running is most likely a vacuum leak or hung-open EGR valve. Surging idle by itself could be a vacuum leak or crudded t-body/IAC, or a failing crank sensor. Really poor running engines can/will throw O2 codes as the sensor will be pegged by the garbage coming down the pipe and not an accurate depiction of their performance. Outward appearance of a crank or cam sensor means nothing. Neither does a voltmeter test. A graphing multi-meter or o'scope is the only way to check them properly.Scanners that display graphs of sensors are equally useless for something as important as a crank sensor, they cannot sample and display fast enough. Whenever the ECU gets busy the first thing it does is grab scanner output cycles.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) Last edited by Beav; 05-20-2006 at 03:10 PM. |
#18
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check all the connectors to the packs and injectors, I know mine acted funny too when I had a few loose wires.... btw, did you ever grab those injectors from the yard? I would still be more than willing to snag those from you, I have to injectors that need to be replaced so... yeah.
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98 Impreza Wago-O-Doom & Datsun Roadsters |
#19
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I did not get around to changing the gasket this weekend. I was busy doing paperwork on my house that we sold!!!! Yippie I movin back to the East Coast.
Trevor and Beav thank you for the advise. I will look further into the the TPS problem. code 32 = O2 sensor 1 inoperative & 37 = O2 sensor 2 inoperative. I did look for any vacuum leaks and found none, looked with engine running too. I did not look in the throttle body, will add that to my list. Chris, Yes I have those injectors, stop by and we can talk price. Steve
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92 SVX AWD 130,000 w/ rebuilt SVX 4.11 97 Audi A4 1.8T (Daily Driver) 03 Ford Expedition(hers) SVXepidia SVX information warehouse Are you in? My Old Locker A 4.11 Founding Father "Tranny #6" I really need a manual Reading IX [SIGPIC][/SIGPIC] Ya I was there
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